Ship-retarder.



. S. GRACA.

VSHIP RETARDER. APPLICATION FILED IuNE'zI. 1918.

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J. P. HASKO & A. S. GRACA.

SHIP HETARDER.

APPLICATION FILED JUNE 27| I9I8.

FIG. 5.

Patented Jan. 28, 1919.

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` JOHN P. HASKO AND ALEXANDER S. GRACA, 0F LAKEWOOD, OHIO.

SHIP-RETARDER.

Specication of Letters Patent.

Application led June 27, 1918. Serial No. 242,204.

To all whom t 'may concern:

Be it known that we, JOI-IN P. HAsKo and ALEXANDER S. GRACA, subjects of the King of Hungary, (having declared their intentions to become citizens of the United States,) residing at Lakewood, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Ship-Retarders, of which the following is a specification. .n

The primary object of the invention is the provision of a means carried by a ship adapted for ready adjustment whereby the progress of the ship is gradually retarded for bringing the ship more quickly to a stop than if permitted to exhaust its own momentum.

A further object of the invention is to provide means for preventing a collision between ships, the device being operable by power furnished from the motive source of the vessel for stopping the travel of the vessel as quickly as desired.

In the drawings forming a part of this application and in which like designating characters refer to corresponding parts throughout the several views, i

Figure 1 is a side elevation of a boat provided with our device,

Fig. 2 is a vertical longitudinal sectional view thereof,

Fig. 3 is a top plan view of the same with portions of the side of the boat shown in horizontal section and with the device illus- ,trated by dotted lines in its operative position,

Fig. 4 is a vertical transverse sectional View through a portion of the device and the boat upon which the same is installed,

Fig. 5 is a perspective view of one of the retarding paddles detached and Fig. 6 is an enlarged sectional view through one of the pivotal connections employed.

1t will be understood that our retarding device may be employed with any form of boat 11. Any desired number of retarding paddles 13 preferably in the form of rectangular blades having a plurality of perforations 14 therethrough, are swingingly attached to the opposite side of the hull 11 by means of upright shafts 14 journaled in thrust bearings 15 at their lower ends and in collars 16 adjacent the upper ends of the Shaft.;

ypaddles 13 may An operating lever 17 is attached to the squared upper end 18 of each paddle shaft 14 and extends through an adjacently positioned slot 1S in the side of the hull. Parallel bars 19 are centrally provided extending longitudinally of the boat 11 having pairs of links 20 pivotally connected as at 21 to the adjacent inner ends of the pairs of levers 17.

These links 20 have bifurca'ted inner ends 22 in superposed relation with the bars 19 positioned between the bifurcations of each link end while Ipivot bolts 23 connect the said bifurcated ends and bars pivotally together.

A plurality of cylinders 24 are positioned adjacent each opposite end of the hull 11, each of said cylinders being provided with a piston 25 having a rod 26 attached to a cross head 28. The cross heads 28. of the sets of cylinders 24 are connected to the opposite ends of the bars 19 and upon admitting fluid such as steam or compressed air into the outer ends of the set of cylinders in which the pistons 25 are retracted, the bars 19 will be moved longitudinally of the hull 11 thereby shifting the links 20 and levers 17 to throw the paddles 13 outwardly as indicated by dotted lines in Fig. 3 of the drawings.

Pipes 29 are provided in the outer ends of the cylinders 24 for admitting air or steam for the purpose mentioned and it will be understood that the admission of luid to the cylinders 24 at the stern 30 of the boat will forwardly move the bars 19 returning the paddles 13 to their inoperative positions rearwardly extending and {iatly engaging the sides of the hull 11. The said paddles 13 are adapted to be positioned substantially perpendicularly to the sides of the hull 11 when the pistons 25 in the cylinders 24 at the bow 31 of the boat are moved to the extremity of their strokes and the size of the paddles 13 is so calculated as to stop the onward travel of the boat through the water in the least possible time when the paddles are so positioned.

By controlling the amount of fluid which is supplied to the bow cylinders 24, the angular position of the paddles 13 is regulated for bringing the boat to a more or less sudden stop, while by controlling the fluid in the cylinders at both ends of the boat the be successively outstretched and folded and thereby controlling .the progress of the boat through the water. The device possesses great simplicity and is serviceable in connection with any form of boat for affording greater safety and added facilities for controlling the movements of the craft.

While three cylinders 24 are provided in each set as herein illustrated, it is understood that a greater or less number `may-.be employed if desired. The connection between the 'levers 17 and the paddle shafts 14 is in Ithe form of a circular head 32 at the outer end of each of the levers 17, these heads being positioned within the slots 18 and having squared central openings through which the squared endslS of the shafts 14 extend. In this manner7 the heads 32 substantially ll :the slots 18 which would not be the. case if the lever 17 were shiftably positioned through the saidl slots. The perforations 14 of the paddles act after the manner of a dash-pot permitting the water to slowly Ipass therethrough.

Vfhat we claim as new is 1. A device of the class described comprising in combination with affboat, paddles journaled in pairs outwardly of the opposite sides of the boat, operating levers for said paddles extending inwardly of the boat, longitudinally movablebars centrally positioned within the boat pivotally connected to the inner ends of said levers, a plurality of cylinders adjacent each end of the boat, pistons in the said cylinders attached to the adjacent ends of said bars whereby the admission of Huid to alternate sets of lsaid cylinders is adapted to tip `the paddles for wardly and rearwardly upon the'sides of the hull whereby thetravel of the boat will be retarded at will.

2. rIn combination with a boat7` having opposite slots through the `hull thereof, a

collar and a thrust bearing spaced apart beneath each of said slots, a shaft j'ournaled in said bearings and collars having a squared upper end adjacent said slots, a perforated paddle Icarried by each of said slots, a lever for each shaft having a circular head at-' tached to the squared 'end thereof and shiftably positioned within the adjacent slot, superposed -bars longitudinally shiftable centrally within `the boat, pivotal link connections between said bars and the inner ends of said levers whereby upon shifting the Abars in one direction the paddles are adapted for perpendicular arrangement relatively offthe sides of the hull and shifting means for said bars.

3. In combination with a boat, having opposite slots through the hull thereof a collar and a thrust bearing spaced apart lbeneath each of said slots, a shaft journaled in said bearings and collars having a squared upper end adjacent said slots, a perforated paddle carried by each of said slots, a'lever for each shaft having a-oircu'lar head attached to the squared end "thereof and shi-ftyably positioned within the adjacent slot, superposed bars longitudinally shiftable centrally within the boat, pivotal link connections between said bars and the inner ends of said levers whereby'upon shifting the bars in one direction the paddles are adapted 'for perpendicular arrangement relativelyof the sidesof the hull, a set of cylinders positioned adjacent each end ofthe hull, a cross head upon the opposite ends of said'bars, pistons ywithin said cylinders, having operating rods attached to said cross heads and fluid-conducting pipes tapped into the outer ends of each set of cylinders.

In testimony whereof we aiix our signatures.

JOHN P. HASK. ALEXANDER S. GRACA.

Copies of this patent maybev obtainedforve `cents each, by addressing the \,Gon1missioner o1. Pallta,

` 'Washington I). Gl. i 

